rivt is an extensible, open source Python tool for writing and organizing engineering documents. It publishes rivt files to formatted text, HTML or PDF document (rivt doc) files. A rivt file is a Python file (.py) that imports the rivtlib Python package and includes rivt markup.
A rivt report is a linked compilation of multiple rivt docs. This site is an example of an HTML rivt report.
An interface for finding public rivt files on GitHub is here. A collection of open source models and calculations , including rivt, is found here on Google Drive.
ver: 1.0.0a12 (Note: rivt is alpha sofware. Some features are incomplete and the user API may change.)